A method is provided for producing hyperbranched polymers comprising heating a polymerizable reaction charge comprising (a) a monomer mixture comprising 50-99.1% by weight of at least one monoethylenically unsaturated monomer and 0.1-50% by weight of one or more multiethylenically unsaturated monomers and (b) if at least one ethylenically unsaturated monomer of the monomer mixture is not a thermally initiating monomer, a free radical polymerization initiator, to a temperature in the range from about 250° C. to about 400° C. in a continuous reactor which allows mixing of the reactor contents for a residence time of from about 2 minutes to about 60 minutes, provided that if the total amount of multiethylenically unsaturated monomer is less than 3% by weight of the monomer mixture than at least one of said one or more multiethylenically unsaturated monomers must be tri- or greater ethylenically unsaturated. The hyperbranched polymers prepared by this process are also described.
提供了一种生产超支化聚合物的方法,该方法包括加热可聚合反应料,该反应料包含 (a) 单体混合物,该单体混合物包含 50-99.1%(按重量计)的至少一种单
乙烯不饱和单体和 0.1-50%(按重量计)的一种或多种多
乙烯不饱和单体,以及 (b) 如果单体混合物中至少一种
乙烯不饱和单体不是热引发单体,则包含自由基聚合
引发剂,将该单体混合物加热到约 250°C 至约 400°C 的温度范围。如果多
乙烯不饱和单体的总量小于单体混合物重量的 3%,则所述一种或多种多
乙烯不饱和单体中至少有一种必须是三
乙烯不饱和或更大
乙烯不饱和。此外,还介绍了通过该工艺制备的超支化聚合物。